The Wonder Washer seems like a very cheap and unreliable product. You're putting water into it, yet cannot get the motor wet?
With something like this, I would recommend a non-electric version. The Wonder Wash, or Wonder Clean, can wash jeans (though only a couple pairs at a time), works with a hand crank, and works without the risk of electric shock (I have a fear of that, understandably I'm sure.)
I recommend air drying, that way you've just done your laundry using the least amount of electricity possible. I got a great rack-dryer for $15 from Lowes, it's very sturdy and can be adjusted to go longer or taller.
You could also get a counter-top spin dryer, but I hate paying for electric when there's a free alternative, so...